Sony and Guerrilla Games have shared a new trailer teasing the story of Killzone: Shadow Fall, coming to PlayStation 4 as a launch title this holiday season.

Here’s a blurb:

Although they’ve shared the same planet for thirty years, the Vektans and the Helghast are now on the brink of war. With both factions eager to protect their home and reclaim what they believe is theirs, trust has reached an all-time low. The wall built to separate both sides can no longer contain the enemy.

As a Shadow Marshal, you serve under Vektan Security Agency director Sinclair, who has you perform the difficult missions that ensure the balance remains tipped in favor of the Vektans. But Echo, an intelligence operative for the Helghast, has similar orders – and she will stop at nothing to accomplish them.